Deep-well pump



H. F. BENSON DEEP WELL PUMP March 17, 1931.

Filed March 27, 1929 Patented "Man` 1 7, 1 931 f um'rlab sTATEs PATENTOFFICE HARRY F. BENSON, Oil'V HOLYOKE, MASSACHUSETTS, ASSIGNOB TOWORTHINGTON F NEW YORK, N. Y., A CORPORATION 0F PUMP .AND MACHINERYCORPORATION, VIRGINIA l Application med Iarch 27,

This invention relates to deep well pumps, and more particularly to ajacket pump structure for pumping cooling water into the cooling chamberof the driving heads `of .l deep well pumps.

' An object ofthe resent invention isto provide a ositive, ependablewater cooling system or deep well pumps; particularly those havingsurface discharge, that is, where there is not sufficient excess head tothrow the water up into the cooling chambers of the driving heads ofthepumps; which is simple in construction, is rugged, dependable for usein deep well pump structures of ll5 either the plain cover pipe ortension cover pipe system,and one which can be used in connection withvarious approved oil lubrieating systems without danger of mixing waterand-oil.

. With these, and other objects in view as may appear from theaccompanying specification, the inventionconsists in various features ofvconstruction and combination of parts, which will be first described inconnection with the accompanying drawings,

showing a pump of the preferred orm embodying the invention, and thefeatures forming the invention will be specifically pointed out in theclaims.

80 In the drawings:

Fig. 1 is a'vertical section through the power end of a deep well pump,showing the improved cooling water structure applied thereto.

.35 Fig. 2 is a detailed section through a part of the Jump structureand taken on the line 2-2 o Fig. Fig. 3 is a side elevation partly insection, showing the cooling water pumping system applied to a slightlydifferent type of deep well pump.

Referring more (particularly to the drawings, the improve jacket pumpfor circulating cooling water is shown in Figsl and 2 of the drawings asapplied to an approved type of deep well pump embodying a motor 1, whichdrives the driving shaft 2 through a series of couplings and the thrustbearing j structure 3, as is usual in this type of deep "3 well pumps.The thrust bearing structure DEEP-WELL PUMP 1929. Serial No. 350,174.

3 is enclosed within arsuitable housing 4, in which oil is placed, asshown at 5, and it is for the purpose of coolin this oil and the thrustbearing 3 that the improved coolf in water circulating pump is provided.

1 he solid impeller driving shaft 2 of the pump is connected by thecoupling 6 to the lantern gland 12 from a suitable supply reservoir 13,through the suitable conduit 14,

which may be a flexible tube if desired. The lubricating oil is pumpedinto the shaft 7 from the reservoir 13 by any suitable type of pumpstructure, as indicated at 15, and it flows downwardly throughthe/.hollow shaft and out of the shaft through the openings 16 into thespring space 17 in the casing 18 of the jacket pump. The casing 18 isthread. ably connected at its lower end to the cover pipe 19 of the pumpstructure and the lubricatingv oil, which flows into the spring space17, flows past the follower 20 into the cover pipe 19 and it isprevented from flowing upwardly into the casing by the packing 21 of anyapproved type, which is packed or held tightly in position bv the spring22 in the spring space 17. When the cover pipe 19 is full of oil, thevalve 23 may be adjusted for regulating the normal `iiow of oil into thecover pipe. 'd

The oil chamber 4 of the thrust bearing 3 is surrounded by a coolingjacket 25 and cold water is circulated through this cooling jacket 25 bythe jacket pump structure,

i which includes the casing 18 and the impeller plurality of openings29, positioned so as to be below the normal water level in the elbow 28.The rotation of the impeller 26 of the let pipe 33, which maydischarge'at any suitable point or be connected to the discharge pipe ofthe pump, if it is sodesired, without departing from the spirit of thisinvention.

As previously stated, the lower end of the casing 18 is threaded on tothe top end of the cover pipe 19 and it is so made that by turningtheilange 31 and the casing 18, the tension of the cover pipe may beregulated, or, in other words, the cover pipe may be ut in tension ifdesired. The sleeve 27, whic carries the'impeller 26, is adjustable on ahollow shaft 7 and is held in adjusted position and for rotation withthe shaft 7 by a set screw 35. From the foregoing description, taken inconjunction with the accompanying drawings, it will be apparent thatcooling water, for cooling the thrust bearing 3, will be eiiicientlysupplied from the main discharge of all liability o the pump by means ofthe jacket pump structure includin the impeller 26, and, also, thatgmixing' of water with the oil in the cover pipe structure will beeliminated, as well as mixture of oil with the water, and that while theimproved jacket pump is shown as used in connection with a deep wellpump having a particular type of lubricating system, it is to beunderstood that it may be applied to any approved type of dee well pumphavingany approved type of lu ricating system, and, also, that it may beem loyed with pumps other than those of w at'v is known as thetensioncover pipe type.

For exampe; inV Fig. 3 of the drawings, the improved jacket water pumpis shown employed in connection with a deep well pump structure 40 inwhich the shaft 11 is not hollow and the lubricating oil is supplieddirectly to the cover pipe 42 through a suitable connection 43 below thelower end of the casing 18 of the jacket water ump.

The iange 31 of the pump s own in Figs. 1 and 2 of the drawings, and theflange 31' of the pump shown'in Fig. 3 of the drawings, may be provided'with a plurality of circum- Aerentially spaced openings 36 to permitconnection of the flexible conduit 32 or 32, with theanges at variouspoints, it being understood that these openings are normally closed in.any suitable manner.

it will also be noted from the foregoing description and the accomanying drawings, that the improved type of jacket water pump -isspecially adapted for use in deep weil pumps of the type where the coverpipe is to be kept in tension and that it will at thevsame time make itpossible to attach the impeller vof the jacket water pump directly tothe rotating shaft 7 low enough to operate below the discharge waterlevel of thedeep well-pump proper, thereby needing no priming, and atthe same time provide a complete separation of the oil system from thewater, and, further,

will allow the turning of the casing 18 to tighten the cover pipe 19, asdesir'ed or necessar v Ist will be understood that the invention is notto be limited to the specific construction or arrangements of partsshown but that these may be modified widely within the invention definedby the claims.

What. is claimed is:

1. The combination with a deep well pump embodying a driving shaft and acover pipe therefor, of a cooling water circulatin pump including animpeller carried by sai shaft, and a casing for said impeller threadedto said cover pipe whereby the tension of th Acover pipe may be variedby adjustment of the casing.

2. The combinationof a deep well pump embodying a driving shaft, athrust bearing therefor, a cover pipe about a part of the driving shaft,a cooling water pumping impeller carried by said shaft for circulatingcooling water about said thrust bearing, a casing for said impeller,said casing `being threaded to said cover pipe whereby the tension ofthe cover pipe maybe varied by adj ustment of the casing.

3. The combination of adeep well pump embodying a driving shaft, a coverpipe there-for, and a power end housing, of a water jacket carried bythe housing, a cooling waterV circulating pump includin an impellercarried b said shaft for circulating cooling water tlsirou h said housinand a casing for said impe er carried b t e hous` ing and extendingbelowV the disc arge level of the deep well pump, said casing beingthreaded to said cover pipe whereby the tension of the/ cover pipe maybe varied by adjustment of the casing. l

4. rihe combination with a deep wellpump embodying a driving shaft, acover pipe therefor, of a cooling water circulating pump including animpeller carried by said shaft,

Aa casing for said impeller, means for supplying lubricating oil to saidcover pipe, and iiuid tight packing carried by said casing forpreventing mixing of the water and lubricating oil.

ln testimony whereof l aix my signature.

HARRY F. BENSON.

